For a ~294,000-node second brain (projects, files, memories, agents) sitting in Neo4j / Supabase plus real files on disk. Here is what you can buy today, how each one works, what it costs, and the honest gaps.
| Tool | 3D? | Your data? | Renders real file? | 294k scale? | Price / trial |
|---|---|---|---|---|---|
| Kineviz GraphXR | Yes | Neo4j native + CSV/SQL | Partial (image yes, md no) | Query subsets | Free Lite + cloud quote |
| Graphistry | 2D GPU | Neo4j + CSV/Parquet/Pandas | No (attributes only) | Yes, full | Hub Free / $83 mo |
| TheBrain 15 | 2.5D | No (own store) | Yes, best | Nav tool | $219 one-time |
| Neo4j Bloom / Aura | 2D | Neo4j only | Partial (raw props) | Subscenes | Aura ~$65/GB mo |
| Linkurious | 2D | Neo4j / Neptune native | Yes (record panels) | Subgraphs | EUR 490/user mo+ |
| Obsidian + 3D plugin | Yes | Markdown vault only | Yes, nodes are files | No (low thousands) | Free / $50 yr |
| Cosmograph | 2D GPU | CSV upload (live = SDK) | No | Yes | Free (non-commercial) |
| Memgraph Lab | 2D | CSV / Neo4j import | No | ~32k tested | Free Community |
Pricing pulled from vendor pages 2026-06-21. GraphXR cloud is quote-only; the often-cited ~$5k+/mo is a dated third-party estimate, confirm with their sales.
Self-host GraphXR Lite (free, Docker) against a restored Neo4j of your brain for a true 3D fly-through. Add Graphistry Hub Free to see the whole 294k at once in 2D.
Trial TheBrain 15 (30 days) to feel the click-a-node, read-the-real-note experience. Catch: it cannot ingest your Neo4j or markdown, so it is a reader, not a window into your live brain.
GraphXR full cloud is the only buyable product close to the cinematic fly-through-your-brain experience without writing code. Quote-only.